kdump.conf comments fixes
The default action comment about "halt" is wrong, default action means the action to perform after a vmcore saving failure. Also there are lots of typos and incorrect expressions. Fix them here as well. [dyoung: fixed trailing whitespaces, drop unnecessary comments, change the alignment.] Reported-by: Donald Berry <dberry@redhat.com> Signed-off-by: Xunlei Pang <xlpang@redhat.com> Signed-off-by: Dave Young <dyoung@redhat.com> Acked-by: Baoquan He <bhe@redhat.com>
This commit is contained in:
Xunlei Pang
Dave Young
parent
3859893fee
commit
bf902fc65b
218
kdump.conf
218
kdump.conf
@ -1,145 +1,137 @@
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# Configures where to put the kdump /proc/vmcore files
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# This file contains a series of commands to perform (in order) in the kdump
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# kernel after a kernel crash in the crash kernel(1st kernel) has happened.
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#
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# This file contains a series of commands to perform (in order) when a
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# kernel crash has happened and the kdump kernel has been loaded. Directives in
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# this file are only applicable to the kdump initramfs, and have no effect if
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# the root filesystem is mounted and the normal init scripts are processed
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# Directives in this file are only applicable to the kdump initramfs, and have
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# no effect once the root filesystem is mounted and the normal init scripts are
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# processed.
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#
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# Currently only one dump target and path may be configured at once
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# if the configured dump target fails, the default action will be preformed
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# the default action may be configured with the default directive below. If the
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# configured dump target succedes
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# Currently, only one dump target and path can be specified. If the dumping to
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# the configured target fails, the default action which can be configured via
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# the "default" directive will be performed.
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#
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# Basics commands supported are:
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# raw <partition> - Will dd /proc/vmcore into <partition>.
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# Use persistent device names for partition devices,
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# such as /dev/vg/<devname>.
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# Supported options:
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#
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# nfs <nfs mount> - Will mount fs and copy /proc/vmcore to
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# <mnt>/var/crash/%HOST-%DATE/, supports DNS.
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# raw <partition>
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# - Will dd /proc/vmcore into <partition>.
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# Use persistent device names for partition devices,
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# such as /dev/vg/<devname>.
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#
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# ssh <user@server> - Will scp /proc/vmcore to
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# <user@server>:/var/crash/%HOST-%DATE/, supports DNS
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# NOTE: make sure user has necessary write
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# permissions on server
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# nfs <nfs mount>
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# - Will mount nfs to <mnt>, and copy /proc/vmcore to
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# <mnt>/<path>/%HOST-%DATE/, supports DNS.
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#
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# sshkey <path> - Will use the sshkey to do ssh dump
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# Specifies the path of the ssh key you want to use
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# when do ssh dump, the default value is
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# /root/.ssh/kdump_id_rsa.
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# ssh <user@server>
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# - Will scp /proc/vmcore to <user@server>:<path>/%HOST-%DATE/,
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# supports DNS.
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# NOTE: make sure the user has write permissions on the server.
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#
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# <fs type> <partition> - Will mount -t <fs type> <partition> /mnt and copy
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# /proc/vmcore to /mnt/var/crash/%DATE/.
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# NOTE: <partition> can be a device node, label or uuid.
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# It's recommended to use persistent device names
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# such as /dev/vg/<devname>.
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# Otherwise it's suggested to use label or uuid.
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# sshkey <path>
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# - Will use the sshkey to do ssh dump.
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# Specify the path of the ssh key to use when dumping
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# via ssh. The default value is /root/.ssh/kdump_id_rsa.
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#
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# path <path> - "path" represents the file system path in which
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# vmcore will be saved. If a dump target is specified
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# in kdump.conf, then "path" is relative to the
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# specified dump target. Interpretation of path
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# changes a bit if user has not specified a dump
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# target explicitly in kdump.conf. In this case,
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# "path" represents the absolute path from root.
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# And dump target and adjusted path are arrived
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# at automatically depending on what's mounted
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# in the current system.
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# Ignored for raw device dumps. If unset, will
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# default to /var/crash.
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# <fs type> <partition>
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# - Will mount -t <fs type> <partition> <mnt>, and copy
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# /proc/vmcore to <mnt>/<path>/%DATE/.
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# NOTE: <partition> can be a device node, label or uuid.
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# It's recommended to use persistent device names
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# such as /dev/vg/<devname>.
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# Otherwise it's suggested to use label or uuid.
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#
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# path <path>
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# - "path" represents the file system path in which vmcore
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# will be saved. If a dump target is specified in
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# kdump.conf, then "path" is relative to the specified
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# dump target.
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#
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# Interpretation of "path" changes a bit if the user didn't
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# specify any dump target explicitly in kdump.conf. In this
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# case, "path" represents the absolute path from root. The
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# dump target and adjusted path are arrived at automatically
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# depending on what's mounted in the current system.
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#
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# Ignored for raw device dumps. If unset, will use the default
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# "/var/crash".
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#
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# core_collector <command> <options>
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# - This allows you to specify the command to copy
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# the vmcore. You could use the dump filtering
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# program makedumpfile, the default one, to retrieve
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# your core, which on some arches can drastically
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# reduce core file size. See /sbin/makedumpfile --help
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# for a list of options. Note that the -i and -g
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# options are not needed here, as the initrd will
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# automatically be populated with a config file
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# appropriate for the running kernel.
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# Default core_collector for raw/ssh dump is:
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# "makedumpfile -F -l --message-level 1 -d 31".
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# Default core_collector for other targets is:
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# "makedumpfile -l --message-level 1 -d 31".
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# For core_collector format details please refer to
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# kexec-kdump-howto.txt or kdump.conf manpage.
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# - This allows you to specify the command to copy
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# the vmcore. The default is makedumpfile, which on
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# some architectures can drastically reduce vmcore size.
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# See /sbin/makedumpfile --help for a list of options.
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# Note that the -i and -g options are not needed here,
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# as the initrd will automatically be populated with a
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# config file appropriate for the running kernel.
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# The default core_collector for raw/ssh dump is:
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# "makedumpfile -F -l --message-level 1 -d 31".
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# The default core_collector for other targets is:
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# "makedumpfile -l --message-level 1 -d 31".
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#
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# "makedumpfile -F" will create a flattened vmcore.
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# You need to use "makedumpfile -R" to rearrange the dump data to
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# a normal dumpfile readable with analysis tools. For example:
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# "makedumpfile -R vmcore < vmcore.flat".
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#
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# For core_collector format details, you can refer to
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# kexec-kdump-howto.txt or kdump.conf manpage.
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#
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# kdump_post <binary | script>
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# - This directive allows you to run a specified
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# executable just after the memory dump process
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# terminates. The exit status from the dump process
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# is fed to the kdump_post executable, which can be
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# used to trigger different actions for success or
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# failure.
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# - This directive allows you to run a executable binary
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# or script after the vmcore dump process terminates.
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# The exit status of the current dump process is fed to
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# the executable binary or script as its first argument.
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#
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# kdump_pre <binary | script>
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# - works just like the kdump_post directive, but instead
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# of running after the dump process, runs immediately
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# before. Exit status of this binary is interpreted
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# as follows:
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# 0 - continue with dump process as usual
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# non 0 - reboot the system
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# - Works like the "kdump_post" directive, but instead of running
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# after the dump process, runs immediately before it.
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# Exit status of this binary is interpreted as follows:
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# 0 - continue with dump process as usual
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# non 0 - reboot the system
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#
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# extra_bins <binaries | shell scripts>
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# - This directive allows you to specify additional
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# binaries or shell scripts you'd like to include in
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# your kdump initrd. Generally only useful in
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# conjunction with a kdump_post binary or script that
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# relies on other binaries or scripts.
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# - This directive allows you to specify additional binaries or
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# shell scripts to be included in the kdump initrd.
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# Generally they are useful in conjunction with a kdump_post
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# or kdump_pre binary or script which depends on these extra_bins.
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#
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# extra_modules <module(s)>
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# - This directive allows you to specify extra kernel
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# modules that you want to be loaded in the kdump
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# initrd, typically used to set up access to
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# non-boot-path dump targets that might otherwise
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# not be accessible in the kdump environment. Multiple
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# modules can be listed, separated by a space, and any
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# dependent modules will automatically be included.
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# - This directive allows you to specify extra kernel modules
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# that you want to be loaded in the kdump initrd.
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# Multiple modules can be listed, separated by spaces, and any
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# dependent modules will automatically be included.
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#
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# default <reboot | halt | poweroff | shell | dump_to_rootfs>
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# - Action to preform in case dumping to intended target
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# fails. If no default action is specified, "reboot"
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# is assumed default.
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# reboot: If the default action is reboot simply reboot
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# the system and loose the core that you are
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# trying to retrieve.
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# halt: If the default action is halt, then simply
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# halt the system after attempting to capture
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# a vmcore, regardless of success or failure.
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# poweroff: The system will be powered down
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# shell: If the default action is shell, then drop to
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# an shell session inside the initramfs from
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# where you can try to record the core manually.
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# Exiting this shell reboots the system.
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# Note: kdump uses bash as the default shell.
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# dump_to_rootfs: If non-root dump target is specified,
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# the default action can be set as dump_to_rootfs.
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# That means when dump to target fails, dump vmcore
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# to rootfs from initramfs context and reboot.
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# - Action to perform in case dumping fails.
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# reboot: Reboot the system.
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# halt: Halt the system.
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# poweroff: Power down the system.
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# shell: Drop to a bash shell.
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# Exiting the shell reboots the system.
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# dump_to_rootfs: Dump vmcore to rootfs from initramfs context and
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# reboot. Useful when non-root dump target is specified.
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# The default option is "reboot".
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#
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# force_rebuild <0 | 1>
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# - By default, kdump initrd only will be rebuilt when
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# necessary. Specify 1 to force rebuilding kdump
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# initrd every time when kdump service starts.
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# - By default, kdump initrd will only be rebuilt whennecessary.
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# Specify 1 to force rebuilding kdump initrd every time when kdump
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# service starts.
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#
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#override_resettable <0 | 1>
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# - Usually a unresettable block device can't be dump target.
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# Specifying 1 means though block target is unresettable, user
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# understand this situation and want to try dumping. By default,
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# it's set to 0, means not to try a destined failure.
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# override_resettable <0 | 1>
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# - Usually an unresettable block device can't be a dump target.
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# Specifying 1 when you want to dump even though the block
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# target is unresettable
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# By default, it is 0, which will not try dumping destined to fail.
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#
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# dracut_args <arg(s)>
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# - Pass extra dracut options when rebuilding kdump
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# initrd.
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# - Pass extra dracut options when rebuilding kdump initrd.
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#
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# fence_kdump_args <arg(s)>
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# - Command line arguments for fence_kdump_send (it can contain
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# all valid arguments except hosts to send notification to).
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# - Command line arguments for fence_kdump_send (it can contain
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# all valid arguments except hosts to send notification to).
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#
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# fence_kdump_nodes <node(s)>
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# - List of cluster node(s) separated by space to send fence_kdump
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# notification to (this option is mandatory to enable fence_kdump).
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# - List of cluster node(s), separated by spaces, to send
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# fence_kdump notifications to (this option is mandatory to
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# enable fence_kdump).
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#
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#raw /dev/vg/lv_kdump
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